Mud ring



. March 29, 1932. I H. B. BOWEN 1,851,544

MUD RING F d April 50, 1930 3 Sheets-Sheet 1 INVENTOR ATTORN EY March29, 1932.

March 29, 1932.

H. B, BOWEN MUD RING Filed April 30, 1930 3 Sheets-Sheet 5 INVENTOR BYQ/JIQQ ATTORNEY Patented Mar. 29, 1932 UNITED STATES HENRY B. BowEruoFMommas; onE A QA fi o 7 COMPANY, or New YQBK, N,

MUD, rims App lication filed April 30,

The present invention relates to locomotive mud rings and moreparticularly to structures of this kind intended for use in con-xnection with locomotive fire boxes comprising. walls built up ofvertical water tubes.

i The object of the invention is toprovide a mud ring of this type of'an improved construction. i

The invention is illustrated in the drawings accompanying thisspecification. In the drawings, Fig. 1 is a lateral elevation ofthe rearend of the locomotive boiler having a mud ring in accordance with myinvention, portions being broken away; Fig. Q'is a plan view of myimproved mud ring, no tubes being shown in place: Fig. 3 is an endelevation of the mud ring; Fig. 4 is a section on line Jr-4E of Fig. 2.;Fig.5 is a section on line 5-5 of Fig. 2; Fig. 6 is a plan view of acorner of the mud ring showing some details, portionsbeing broken out toillustrate others behind them; Fig. 7 is a sectional view on line 7- 7of Fig. 6. and Fig. 8 is a sectional view on line 8-8 of Fig. 6. Figs. 4to 8 are on an en larged scale as compared with the first three figures.I

The mud ring, as will be seen clearly from an inspection of Fig. 2, ismade up of four separate members. Two of these, 1a and 16, run parallelto the longitudinal axis of the locomotive boiler, the other two, 2a and2?), being disposed at right-angles to the former. Thefour members arerectangular in external outline and have extending through themacylindrical cavity. This cavity in each case I extends through themember from end to end.

The upper surface of the members is pro: vided with holes to receive thelower ends of the vertical water tubes. In the rear header 2a, forexample, there is a line of holes 20. Into these aree-xpandedthe lowerends of vertical tubes which formthe back wall of the furnace. Thelateral members 1a and 15' each have an inner row of openings lc and aseries of outer openings 1d. Into the open ings 1c are expanded'the'lower ends of bifurcated tubular elements3 3. These elements are incontact with each other and form a sub; stantially continuous lateralwall .on' each" sideof the furnace. Theopenings'1d1d'rer exactlycorresponding fashion.

drical portion is shown at 8 and it extends through a correspondinglyshape'dbpening through the member 1a. 7

portion 8 has formed through one of its sides 1930.. sen-aina asss'x lybehind it) Water to the mud ring is sup- THE surniaune'rnn r ceive thelowerlen'ds of the downcomer tubes pliedr through the downc'omers 4 4.-The' forward mud. ring memberQb has a-s'eries of openings 2d2d intowhichare expanded the loweriends of forwardly extending tubes 5 whichform the bottom of acombustion chamberathroughwhichthe gases pass afterleaving; the fire-box The holes 26 .111 the tubes extending through thefire-box. Access to: thetubeswhich are expanded intothe various openingsreferred to is-pro- .-vided by corresponding,openings 6 in the oppositewall; of the members 1a,=1 b',2a a nd 2b.

7, expandedior rolledinto them;

both of its ends turned down to a cylinzmember 26 arelfor the connection0f arch;

f 5 drical shape asshown' more clearly in Fig. 6.

This figure, as well as the associated Figs. 7

and 8, shows one of the corners of the mud ring, the other corners beingconstructed in The cylin:

an opening 9 putting the interior of the member 2a into communicationwith the interior of the member 1a. plane surface 10 against which a:shoulder The cylindrical.

The member 1a hasja 11 of the member 2a seats, the seat extending aroundthe opening in member 1a. -Along the line 12forming the-outercircumference of the seat the two'm ember's are welded to-- getherto'make a tight jointg Theouter end- I of the openingthrough-member;1ais outwardly flared as at 13. The "endll of. the

opening through the member 2a is interiorly threaded to receive acorrespondingly thread ed plug. This plugwhen pulled in with the properamount of force expands the/end of the member 2a against ,thesides ofthe cirioo eular opening in the member 141. .At 15 there .is acircumferential weld of the circular end of member 2a to member 1a tomake a tight 7 joint. At 16 (Fig. 7) is shown the plug inserted into theend of the openingwhich extends into member la..,=,Both the plug that icloses theop'ening 14 and theipl'ugi '16 are Welded in toinsuretightness.

Each of the four corners is constructed. 7

' like the one-described and the resulting strung ture is a rigid andrugged -mud ring. Ae

cess to its interior, for various purposes ,canb readily be had throughthe removal or the Z plugs vor of the thimbles- 7.

It will be Obvious l ertain modifieetionscould be introduced inpracticing the invention without depaatingriromthespiiiit x fethisdisclosure" l j and being joined to each other at the "cornets, of themembers meeting at 'ea'ch corner having a cylindrical perforation near,its endintersecting its cavity'tlie perforation ;being=-s1ightly flaredfat zits outer side, the v n other member having-its-endcorrespondingly:10

shaped andfitted snugly into said. perform tion and having a'plugscrewedinto Tits-end forcing the all against theuflamedjsides of theperforation, asaid second 1 member havingarsquare shoulderbearingaghinstthecorv respondingly'flattenedsideof the"first m'em-vleer-,the cylindrical end nftlre 'second member having a lateral'opening plafcingthecavities I ost the two members into communimtiomthethe firstamember being closed: :by a

A- loeomotive zm-ud ring comprising four elongated members each havinga-longitudinalcavityextendingcfromien'dto end -said .me'm-bers beingarranged to form a rectangle

